Work boots, and military boots alike require sturdy elastic laces for safety and comfort. The Xtenex boot laces are constructed with knots which help hold the laces in place.
For best results, Xtenex suggests lacing the boots while you’re wearing them. Stretch the laces to flatten the knots, then put them through the eyelet and let go to restore the knots. The more knots there are in-between eyelets, the looser the fit.
Be sure not to get the elastic laces too tight the first time you lace up. If correctly fixed, you should only have to lace once.